A modified method for barium titanate nanoparticles synthesis

• Published in: Materials research bulletin Vol. 46; no. 12; pp. 2291 - 2295
• Main Authors: Ashiri, R., Nemati, Ali, Sasani Ghamsari, M., Sanjabi, S., Aalipour, M.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.12.2011
• Subjects: A. Ceramics; A. Nanostructures; B. Sol–gel chemistry; C. Electron microscopy; D. Ferroelectricity; FERROELECTRIC MATERIALS; MATERIALS SCIENCE; MICROSTRUCTURE; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; PARTICLES; SCANNING ELECTRON MICROSCOPY; SYNTHESIS; TITANATES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; B. Sol–gel chemistry; D. Ferroelectricity; A. Ceramics; C. Electron microscopy; A. Nanostructures
• ISSN: 0025-5408; 1873-4227
• DOI: 10.1016/j.materresbull.2011.08.055

TEM micrograph of BaTiO 3 powders synthesized at 800 °C for 1 h and SAED pattern (inset) of BaTiO 3 powders. In this research, a modified, cost efficient and quick sol–gel procedure was used for preparation of BaTiO 3 nanoparticles. [Display omitted] ► A modified process was used for preparation. ► The modified process led to preparation of finer BaTiO 3 nanoparticles in shorter period of time and lower temperature contrary to previous researches. ► The proposed procedure seems to be more preferable for mass production. In this research, a modified, cost effective sol–gel procedure applied to synthesize BaTiO 3 nanoparticles. XRD and electron microscopy (SEM and TEM) applied for microstructural characterization of powders. The obtained results showed that the type of precursors, their ratio and the hydrolysis conditions had a great effect on time, temperature and therefore the costs of the synthesis process. By selection, utilization of optimized precursor's type, hydrolysis conditions, fine cubic BaTiO 3 nanoparticles were synthesized at low temperature and in short time span (1 h calcination at 800 °C). The proposed procedure seems to be more preferable for mass production. The result indicated that the polymorphic transformation to tetragonal (ferroelectric characteristic) occurred at 900 °C, which might be an indication of being nanosized.